Long Service Life
Stable load with evenly distributed ball force; selected bearing steel resists fatigue and extends equipment service life.
Linear Bearings | LM Standard Linear Bushing
LM-UD Medium Series
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The LM-UD Medium Series integrates a flange at one end of the sleeve for direct bolt mounting, eliminating separate housings with high running accuracy and compact structure. Round (LMF), square (LMK) and cut-edge (LMH) flange types are available in standard, long, medium (UD), compact (TH) and embedded (E) versions.
Linear Bearings | LM Standard Linear Bushing
LM-UD Medium Series
The LM-UD Medium Series integrates a flange at one end of the sleeve for direct bolt mounting, eliminating separate housings with high running accuracy and compact structure. Round (LMF), square (LMK) and cut-edge (LMH) flange types are available in standard, long, medium (UD), compact (TH) and embedded (E) versions.
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Features
- Integrated flange for direct bolt mounting
- Round, square or cut-edge flange types
- Standard, long, compact (TH), medium (UD) options
- Embedded type (-E) for blind-hole press fit
Model Designation
UD is the medium series with sleeve length and load between standard and long types.
Specifications
See the parameter table for detailed specifications (shaft diameter, OD, length, load ratings etc.) by model code.
Long Service Life
Stable load with evenly distributed ball force; selected bearing steel resists fatigue and extends equipment service life.
Quiet Operation
Circulating balls deliver smooth reciprocating motion, reducing metal friction noise and keeping operation quiet at high speed.
Precise Tolerance
Strict dimensional tolerance control gives excellent bore accuracy, uniform clearance with the guide shaft and high positioning precision.
Low-Friction Travel
A closed ball-circulation structure keeps rolling friction low, making reciprocating motion light and responsive with less drive loss.
Quiet Operation
Circulating balls deliver smooth reciprocating motion, reducing metal friction noise and keeping operation quiet at high speed.
Precise Tolerance
Strict dimensional tolerance control gives excellent bore accuracy, uniform clearance with the guide shaft and high positioning precision.
Low-Friction Travel
A closed ball-circulation structure keeps rolling friction low, making reciprocating motion light and responsive with less drive loss.
Dimensional Diagram
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Specifications Table
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LM10-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 10 | mm | Shaft Diameter |
| D | 19 | mm | Outer Diameter |
| L | 47 | mm | Length |
| B | 30 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 18 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 49 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 505 | N | Basic Dynamic Load Rating |
| Co | 715 | N | Basic Static Load Rating |
| dr Tolerance | -0/-0.009 | mm | Shaft Diameter Tolerance |
| D Tolerance | -0.3/0 | mm | Outer Diameter Tolerance |
LM10UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 10 | mm | Shaft Diameter |
| D | 19 | mm | Outer Diameter |
| L | 47 | mm | Length |
| B | 30 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 18 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 49 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 505 | N | Basic Dynamic Load Rating |
| Co | 715 | N | Basic Static Load Rating |
| dr Tolerance | -0/-0.009 | mm | Shaft Diameter Tolerance |
| D Tolerance | -0.3/0 | mm | Outer Diameter Tolerance |
LM12-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 12 | mm | Shaft Diameter |
| D | 21 | mm | Outer Diameter |
| L | 47 | mm | Length |
| B | 30 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 20 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 54 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 630 | N | Basic Dynamic Load Rating |
| Co | 810 | N | Basic Static Load Rating |
| dr Tolerance | -0.010/0 | mm | Shaft Diameter Tolerance |
| D Tolerance | -0.016/0 | mm | Outer Diameter Tolerance |
LM12UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 12 | mm | Shaft Diameter |
| D | 21 | mm | Outer Diameter |
| L | 47 | mm | Length |
| B | 30 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 20 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 54 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 630 | N | Basic Dynamic Load Rating |
| Co | 810 | N | Basic Static Load Rating |
| dr Tolerance | -0.010/0 | mm | Shaft Diameter Tolerance |
| D Tolerance | -0.016/0 | mm | Outer Diameter Tolerance |
LM13-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 13 | mm | Shaft Diameter |
| D | 23 | mm | Outer Diameter |
| L | 47 | mm | Length |
| B | 30 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 22 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 69 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 640 | N | Basic Dynamic Load Rating |
| Co | 826 | N | Basic Static Load Rating |
| D Tolerance | -0.3/0 | mm | Outer Diameter Tolerance |
LM13UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 13 | mm | Shaft Diameter |
| D | 23 | mm | Outer Diameter |
| L | 47 | mm | Length |
| B | 30 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 22 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 69 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 640 | N | Basic Dynamic Load Rating |
| Co | 826 | N | Basic Static Load Rating |
| D Tolerance | -0.3/0 | mm | Outer Diameter Tolerance |
LM16-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 16 | mm | Shaft Diameter |
| D | 28 | mm | Outer Diameter |
| L | 56 | mm | Length |
| B | 35 | mm | Width |
| W | 1.6 | mm | Raceway Width |
| D1 | 27 | mm | D1 Dimension |
| Ball Circuit | 5 | 个 | Ball Circuit |
| Weight | 112 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 1160 | N | Basic Dynamic Load Rating |
| Co | 1445 | N | Basic Static Load Rating |
LM16UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 16 | mm | Shaft Diameter |
| D | 28 | mm | Outer Diameter |
| L | 56 | mm | Length |
| B | 35 | mm | Width |
| W | 1.6 | mm | Raceway Width |
| D1 | 27 | mm | D1 Dimension |
| Ball Circuit | 5 | 个 | Ball Circuit |
| Weight | 112 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 1160 | N | Basic Dynamic Load Rating |
| Co | 1445 | N | Basic Static Load Rating |
LM20-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 20 | mm | Shaft Diameter |
| D | 32 | mm | Outer Diameter |
| L | 65 | mm | Length |
| B | 40 | mm | Width |
| W | 1.6 | mm | Raceway Width |
| D1 | 30.5 | mm | D1 Dimension |
| Ball Circuit | 5 | 个 | Ball Circuit |
| Weight | 152 | g | Weight |
| Eccentricity | 20 | μm | Eccentricity |
| C | 1550 | N | Basic Dynamic Load Rating |
| Co | 2065 | N | Basic Static Load Rating |
| D Tolerance | -0.019/0 | mm | Outer Diameter Tolerance |
LM20UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 20 | mm | Shaft Diameter |
| D | 32 | mm | Outer Diameter |
| L | 65 | mm | Length |
| B | 40 | mm | Width |
| W | 1.6 | mm | Raceway Width |
| D1 | 30.5 | mm | D1 Dimension |
| Ball Circuit | 5 | 个 | Ball Circuit |
| Weight | 152 | g | Weight |
| Eccentricity | 20 | μm | Eccentricity |
| C | 1550 | N | Basic Dynamic Load Rating |
| Co | 2065 | N | Basic Static Load Rating |
| D Tolerance | -0.019/0 | mm | Outer Diameter Tolerance |
LM25-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 25 | mm | Shaft Diameter |
| D | 40 | mm | Outer Diameter |
| L | 83 | mm | Length |
| B | 55 | mm | Width |
| W | 1.85 | mm | Raceway Width |
| D1 | 38 | mm | D1 Dimension |
| Ball Circuit | 6 | 个 | Ball Circuit |
| Weight | 332 | g | Weight |
| Eccentricity | 20 | μm | Eccentricity |
| C | 1720 | N | Basic Dynamic Load Rating |
| Co | 3065 | N | Basic Static Load Rating |
| dr Tolerance | -0.012/0 | mm | Shaft Diameter Tolerance |
| D Tolerance | -0.6/0 | mm | Outer Diameter Tolerance |
LM25UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 25 | mm | Shaft Diameter |
| D | 40 | mm | Outer Diameter |
| L | 83 | mm | Length |
| B | 55 | mm | Width |
| W | 1.85 | mm | Raceway Width |
| D1 | 38 | mm | D1 Dimension |
| Ball Circuit | 6 | 个 | Ball Circuit |
| Weight | 332 | g | Weight |
| Eccentricity | 20 | μm | Eccentricity |
| C | 1720 | N | Basic Dynamic Load Rating |
| Co | 3065 | N | Basic Static Load Rating |
| dr Tolerance | -0.012/0 | mm | Shaft Diameter Tolerance |
| D Tolerance | -0.6/0 | mm | Outer Diameter Tolerance |
LM30-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 30 | mm | Shaft Diameter |
| D | 45 | mm | Outer Diameter |
| L | 90 | mm | Length |
| B | 71.5 | mm | Width |
| W | 1.85 | mm | Raceway Width |
| D1 | 42.5 | mm | D1 Dimension |
| Ball Circuit | 6 | 个 | Ball Circuit |
| Weight | 453 | g | Weight |
| Eccentricity | 20 | μm | Eccentricity |
| C | 2440 | N | Basic Dynamic Load Rating |
| Co | 3974 | N | Basic Static Load Rating |
LM30UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 30 | mm | Shaft Diameter |
| D | 45 | mm | Outer Diameter |
| L | 90 | mm | Length |
| B | 71.5 | mm | Width |
| W | 1.85 | mm | Raceway Width |
| D1 | 42.5 | mm | D1 Dimension |
| Ball Circuit | 6 | 个 | Ball Circuit |
| Weight | 453 | g | Weight |
| Eccentricity | 20 | μm | Eccentricity |
| C | 2440 | N | Basic Dynamic Load Rating |
| Co | 3974 | N | Basic Static Load Rating |
LM6-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 6 | mm | Shaft Diameter |
| D | 12 | mm | Outer Diameter |
| L | 29 | mm | Length |
| B | 20 | mm | Width |
| W | 1.1 | mm | Raceway Width |
| D1 | 11.5 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 12 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 225 | N | Basic Dynamic Load Rating |
| Co | 305 | N | Basic Static Load Rating |
| D Tolerance | -0.013/0 | mm | Outer Diameter Tolerance |
LM6UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 6 | mm | Shaft Diameter |
| D | 12 | mm | Outer Diameter |
| L | 29 | mm | Length |
| B | 20 | mm | Width |
| W | 1.1 | mm | Raceway Width |
| D1 | 11.5 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 12 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 225 | N | Basic Dynamic Load Rating |
| Co | 305 | N | Basic Static Load Rating |
| D Tolerance | -0.013/0 | mm | Outer Diameter Tolerance |
LM8-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 8 | mm | Shaft Diameter |
| D | 15 | mm | Outer Diameter |
| L | 37 | mm | Length |
| B | 25 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 14.5 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 27 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 305 | N | Basic Dynamic Load Rating |
| Co | 450 | N | Basic Static Load Rating |
| D Tolerance | -0.013/0 | mm | Outer Diameter Tolerance |
LM8UU-UD
| Parameter | Value | Unit | Note |
|---|---|---|---|
| dr | 8 | mm | Shaft Diameter |
| D | 15 | mm | Outer Diameter |
| L | 37 | mm | Length |
| B | 25 | mm | Width |
| W | 1.3 | mm | Raceway Width |
| D1 | 14.5 | mm | D1 Dimension |
| Ball Circuit | 4 | 个 | Ball Circuit |
| Weight | 27 | g | Weight |
| Eccentricity | 15 | μm | Eccentricity |
| C | 305 | N | Basic Dynamic Load Rating |
| Co | 450 | N | Basic Static Load Rating |
| D Tolerance | -0.013/0 | mm | Outer Diameter Tolerance |
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